Bovine anatomy : an illustrated text

144 Pages·2003·12.827 MB·English

by  Klaus-Dieter Budras, et al

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Klaus-Dieter Budras/Robert E. Habel
BOVINE ANATOMY
An Illustrated Text
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BOVINE ANATOMY
An Illustrated Text
F I R S T E D I T I O N
Professor Klaus-Dieter Budras
Dr. med. vet. habil.
Institute of Veterinary Anatomy
Free University of Berlin
Professor em. Robert E. Habel
DVM, MVD
Dept. of Biomedical Sciences
College of Veterinary Medicine
Cornell University, Ithaca, New York
Dr Anita Wünsche
Institute of Veterinary Anatomy
Free University of Berlin
Dr Silke Buda
Institute of Veterinary Anatomy
Free University of Berlin
Scientific Illustrators
Gisela Jahrmärker
Renate Richter
Diemut Starke
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COLLABORATION ON THE ATLAS OF BOVINE ANATOMY
First edition:
Cover design:
Diemut Starke
Collaborators on the whole project:
Angela Baumeier
Daniela Bedenice
Christina Braun
Anne-Kathrin Frohnes
Constanze Güttinger
Susann Hopf
Claudia Nöller
Susanne Poersch
Eva Radtke
Monika Sachtleben
Thilo Voges
Editor:
Prof. Dr. Klaus-Dieter Budras, Institut für Veterinär-Anatomie, Freie Universität Berlin
Contributions:
PD Dr. Hermann Bragulla, Institut für Veterinär-Anatomie, Freie Universität Berlin
Dr. Silke Buda, Institut für Veterinär-Anatomie, Freie Universität Berlin
Prof. Dr. Reinhard Fries, Dr. Tina Eggers, Institut für Fleischhygiene, Freie Universität Berlin
Prof. Dr. Götz Hildebrandt, Katrin Rauscher, Institut für Lebensmittelhygiene, Freie Universität Berlin
Prof. Dr. Dr. h.c. Horst E. König, Institut für Anatomie, Veterinärmedizinische Universität Wien
Prof. Dr. Dr. h.c. mult. Hans-Georg Liebich, Institut für Tieranatomie, Ludwig-Maximilians-Universität München
Dr. Christoph Mülling, Institut für Veterinär-Anatomie, Freie Universität Berlin
Prof. Dr. Dr. h.c. Paul Simoens, Fakulteit Diergeneeskunde, Universiteit Gent
Dr. Anita Wünsche, Institut für Veterinär-Anatomie, Freie Universität Berlin
Contributions without further identification:
Prof. Dr. Klaus-Dieter Budras and Prof. Dr. Robert E. Habel
Acknowledgement of sources of illustrations:
The figures on p. 23 were drawn by Wolfgang Fricke and published by Dr. Anita Wünsche (1965).
The figure on p. 79 (below) was drawn by Wolfgang Fricke and published by Dr. Wolfgang Traeder (1968).
The figure on p. 80 was modified from Traeder (1968).
Bibliographic information published by Die Deutsche Bibliothek
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TABLE OF CONTENTS page
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Topographic Anatomy
Chapter1:Thoraciclimb (A. Wünsche, R. Habel and K.-D. Budras)
1.Skeleton of the thoracic limb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.Muscles and nerves of the shoulder, arm, and forearm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.Cutaneous nerves, blood vessels, and lymph nodes of the thoracic limb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.Vessels and nerves of the manus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.Interdigital nerves and vessels, interossei, and fasciae of the manus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.Synovial structures of the thoracic limb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter2:Pelviclimb (A. Wünsche, R. Habel and K.-D. Budras)
1.Skeleton of the pelvic limb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.Lateral thigh and cranial crural muscles with their nerves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.Medial thigh and caudal crural muscles with their nerves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.Cutaneous nerves, blood vessels, and lymph nodes of the pelvic limb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.Arteries, veins, and nerves of the pes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.Dermis of the hoof (Ch. Mülling and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.The hoof (ungula) (Ch. Mülling and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.Synovial structures of the pelvic limb (Ch. Mülling and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Chapter3:Head (R. Habel, and K.-D. Budras)
1.Skull and hyoid apparatus (R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.Skull with teeth (R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.Skull with paranasal sinuses and horns (R. Habel and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.Superficial veins of the head, facial n. (VII), and facial muscles (S. Buda and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.Trigeminal n. (V3 and V2), masticatory mm., salivary gll., and lymphatic system (S. Buda and K.-D. Budras). . . . . . . . . . . . . . . . 38
6.Accessory organs of the eye (P. Simoens and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.The eyeball (bulbus oculi) (P. Simoens and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.Nose and nasal cavities, oral cavity and tongue (S. Buda, R. Habel, and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.Pharynx and larynx (S. Buda, R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
10.Arteries of the head and head-neck junction, the cran. nn. of the vagus group (IX–XI), and the hypoglossal n. (XII)
(S. Buda and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Chapter4:Centralnervoussystemandcranialnerves
1.The brain (R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
2.Cranial nerves I–V (S. Buda, H. Bragulla and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3.Cranial nerves VI–XII (S. Buda, H. Bragulla, and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
4.Spinal cord and autonomic nervous system (S. Buda and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Chapter5:Vertebralcolumn,thoracicskeleton,andneck (A. Wünsche, R. Habel and K.-D. Budras)
1.Vertebral column, ligamentum nuchae, ribs, and sternum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2.Neck and cutaneous muscles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
3.Deep shoulder girdle muscles, viscera and conducting structures of the neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Chapter6:Thoraciccavity
1.Respiratory muscles and thoracic cavity with lungs (Ch. Mülling and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
2.Heart, blood vessels, and nerves of the thoracic cavity (R. Habel and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Chapter7:Abdominalwallandabdominalcavity
1 The abdominal wall (R. Habel, A. Wünsche and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
2.Topography and projection of the abdominal organs on the body wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3.Stomach with rumen, reticulum, omasum, and abomasum (A. Wünsche and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
4.Blood supply and innervation of the stomach; lymph nodes and omenta (R. Habel, A. Wünsche and K.-D. Budras) . . . . . . . . . . . 72
5.Spleen, liver, pancreas, and lymph nodes (P. Simoens, R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
6.Intestines with blood vessels and lymph nodes (P. Simoens, R. Habel and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Chapter8:Pelviccavityandinguinalregion,includingurinaryandgenitalorgans
1.Pelvic girdle with the sacrosciatic lig. and superficial structures in the pubic and inguinal regions (R. Habel and K.-D. Budras). . . 78
2.Inguinal region with inguinal canal, inguinal lig., and prepubic tendon (R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . 80
3.Lymphatic system, adrenal glands, and urinary organs (K.-D. Budras and A. Wünsche). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
4.Arteries, veins, and nerves of the pelvic cavity (A. Wünsche and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
5.Female genital organs (H. G. Liebich and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
6.The udder (H. Bragulla, H. König, and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.The udder with blood vessels, lymphatic system, nerves, and development (H. Bragulla, H. König, and K.-D. Budras) . . . . . . . . . 90
8.Male genital organs and scrotum (R. Habel and K.-D. Budras). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.Perineum, pelvic diaphragm, ischiorectal fossa, and tail (R. Habel and K.-D. Budras) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Anatomicalaspectsofbovinespongiformencephalopathy(BSE)
(S. Buda, K.-D. Budras, T. Eggers, R. Fries, R. Habel, G. Hildebrandt, K. Rauscher, and P. Simoens) . . . . . . . . . . . . . . . . . . . . . . . . . 96
Special Anatomy, Tabular Part
1.Myology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
2.Lymphatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
3.Peripheral nervous system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
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NOTES ON THIS ATLAS
Bovine Anatomy, a translation and revision of Atlas der Anatomie des Rindes, is volume III of a series of atlas-textbooks on the topo-
graphic anatomy of domestic mammals for veterinary students and practitioners. Volume I, AtlasoftheAnatomyoftheDog, in addition
to specific canine anatomy, provides the fundamental concepts of general anatomy required for the study of all mammals. The dog is small
and inexpensive enough that a specimen can be allotted to each dissection team, with advantages in ease of dissection, review, and preser-
vation. Volume II, Atlas of the Anatomy of the Horse, is an introduction to the many specialized systems of a large herbivore, with an
extensive chapter on equine functional and clinical anatomy.
In all three volumes the illustrations were drawn from dissections especially made for that purpose. The boxed information at the top of
some text pages is intended to be a dissection guide for students and to give information on the methods used to make the preparations
illustrated. Species characteristics of the ox, in contrast to the dog and horse, are printed in italics. Important terms are printed in bold-
face type, and when a number is attached to the name, it corresponds to a number in the adjacent illustration. Less important anatomical
features are not mentioned in the text, but are listed in the legends of the illustrations. The descriptions are based on normal anatomy. Indi-
vidual variations are mentioned only when they have clinical importance. The gaps in the numbering of items in the legends of the skele-
tal system (pp. 3, 15, 31, 33) are caused by omission of features that do not occur in the ox, therefore are not illustrated, but were listed
in the German edition for comparison with the dog and horse. The remarks on examination of lymph nodes in meat inspection (pp.
113–118) are translations of German rules and do not necessarily reflect current practice in the United States. The word ox is used in this
book to mean “a domestic bovine mammal (Bos taurus),”* Ox is the singular of the collective term, cattle, and is the accepted English
translation of Ger. Rind. The other meaning: “an adult castrated male domestic ox”* can be understood from the context, as in “a span
of oxen.” The abbreviations used are those of the NominaAnatomicaVeterinaria. Additional abbreviations are explained in the text, the
headings, the legends, and in the SPECIAL ANATOMY, TABULAR PART(pp. 98–125). They are listed here for convenience:
The cranial nerves are indicated by Roman numerals I–XII. Vertebral and spinal nerves are indicated by Arabic numerals.
Spinal Nerves Vertebrae and Spinal Nerves
n — Spinal nerve C — Cervical (e.g. C1—first cervical vertebra or nerve)
nd — Dorsal branch (br.) Cd — Caudal (Coccygeal)
ndl — Lateral br. of dorsal br. L — Lumbar
ndm — Medial br. of dorsal br. S — Sacral
nv — Ventral br. T — Thoracic
nvl — Lateral br. of ventral br.
nvm — Medial br. of ventral br.
cut. br. — Cutaneous br.
* CollegiateDictionary, 1993, 10th ed., Merriam-Webster, Springfield, Mass., U.S.A.
Anatomie des Rindes englisch 09.09.2003 12:15 Uhr Seite 1
PREFACE TO THE FIRST ENGLISH EDITION
This combination of topographic color atlas and concise textbook of Bovine Anatomy is the third volume of a series on the anatomy of
domestic mammals. The first edition of the Atlas and Textbook of the Anatomy of the Dog appeared 20 years ago. It was followed 12
years ago by the second volume, the Anatomy of the Horse. In several German and foreign language editions they aroused world-wide
interest. Therefore our next project was an Atlas and Textbook of Bovine Anatomyfollowing the proven model and thereby closing a pre-
viously existing gap: no comparable work on bovine anatomy was available. The special features of the ox are presented to students in a
well-grounded survey of topographic anatomy. Special anatomyis summarized as brief data in tables of muscles, lymph nodes, and nerves,
with references to the corresponding pages in the text. Comparative anatomyis addressed through references to the horse and dog. In addi-
tion the text-atlas is intended to provide a valuable introduction to the Anatomy of the Living Animal. The authors were concerned with
the preparation of a clear and graphic reference book of important anatomical facts for veterinarians in practice and research as well as
anyone interested in morphology. This book can also serve as a dictionary of English anatomical nomenclature illustrated in color. An
appendix on Applied Anatomy, included in the first and second volumes of the series, was omitted from this edition. Because of its extraor-
dinary relevance for the practical instruction of students it will be provided in the next edition.
Our work on the ox has an unexpected urgency for three reasons: 1. Specialized textbooks for each individual species are required for cur-
riculum revision with the trend to premature specialization and the accompanying formation of species-specific clinics. 2. In the present
time of economic and social change, new diseases like bovine spongiform encephalopathy (BSE) attain enormous importance through their
catastrophic effects. To determine the neuronal pathways of infection, including the autonomic nervous system, and the lymphatic system,
and to judge the risk of noxious substances in the nervous system and in many organs of the body cavities, a graphic survey of bovine
anatomy is necessary. 3. A licensed veterinarian is legally qualified to serve in a wide variety of positions: in private practice with small
mammals, birds, horses, ruminants, and swine; in public health work to prevent transmission of diseases of animals to man; in govern-
mental control of diseases of livestock; and in teaching and research with many species of experimental animals. To maintain public con-
fidence in the profession, students should be required to master the basic as well as clinical sciences for food animals. This places high
demands on teachers and students because a very broad and important body of information must be transmitted even though our teach-
ing time has undergone an ill-advised reduction. Nevertheless, we are forced to accept the challenge, even with our compressed text-atlas,
to reach the intended goal – to cover a huge amount of subject matter in the short time available.
This English edition is the responsibility of Professor Habel. His translation and scientific engagement in the production of this atlas and
the writing and revision of many chapters are his personal service. His collaboration in the community of authors is a great enrichment.
Our thanks are due also to Prof. Dr. Dr. h.c. Simoens (Ghent) for his contributions of text and illustrations on the eye of the ox, to Prof.
Dr. Dr. h.c. König (Vienna) for his article on the mammary glands, and to Prof. Dr. Dr. h.c. mult. Liebich (Munich) for his collaboration
on the article, “Female genital organs.” Coauthors Dr. Wünsche, Dr. Buda, PD Dr. Bragulla, and Dr. Mülling also had their part in the
completion of the book. We had additional professional support from Professors Dr. Berg (St. Kitts, West Indies), Dr. Böhme (Berlin) and
Dr. Hashimoto (Sapporo). The many suggestions and the completion of many separate tasks on this atlas by the scientific, student, and
technical coworkers of our Berlin Institute (see the list of coworkers) were a great help.
Finally, without the prodigious effort of our excellent artists, Renate Richter, Gisela Jahrmärker, and Diemut Starke, the Atlas in its pres-
ent form would be inconceivable. Mrs. Poersch deserves thankful recognition for her careful computer composition, and the coworkers
Mrs. Claudia Nöller and Mr. Thilo Voges for the preparation of subjects to be illustrated, together with computer processing, and for mak-
ing the Index. Our thanks are also due to the Schlütersche Verlag, Publisher and Printer, Hannover, and especially to Dr. Oslage for always
providing support and understanding cooperation in the development of this book.
The provisional completion of our common effort offers the originator and editor, after 30 years of persistent work, the opportunity for a
brief reflection. The enormous expense for the production of a book, together with the revision and improvement of many new editions,
and the necessity of intensive anatomical preparation of subjects for illustration, were at first greatly underestimated. After overcoming
many challenges, the dominant emotion is the joy of an unexpected success that came about through fruitful collaboration with the clos-
est coworkers of our Berlin Institute, with the student body, with the readers, and with German and foreign colleagues across national and
continental borders. The experience gained thereby is of inestimable value. The editor feels richly rewarded by the achievement of a pro-
fessional life-work.
Berlin/Ithaca, May, 2003 The authors
1
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TOPOGRAPHIC ANATOMY
CHAPTER 1: THORACIC LIMB
1. SKELETON OF THE THORACIC LIMB
The thoracic and pelvic limbof the ox, a heavy herbivore, are quite In small ruminants, the dewclaws often lack phalanges; they are
similar in basic structure to those of the horse. then purely cutaneous structures.
a) On the SCAPULA is a large, half-moon-shaped scapular carti- Superficial details of the phalanges of the main digits are similar to
lage (14). The supraspinous fossa (6) is remarkably narrow. It is those of the horse.
cranial to the scapularspine(5). On the distal end of the spine is a
g) The SESAMOID BONES. The four proximal sesamoid bones
prominent sharp-edged acromion(8), as in the dog.
(83) are in the palmar part of the fetlock joints, and the distal
b) On the proximal end of the compact HUMERUS the lateral sesamoid(navicular)bone(84)is in the palmar part of each coffin
majortubercle(25)and the medial minortubercle(29)are divided joint. They are not present in the dewclaws.
into cranial and caudal parts, as in the horse. Distal to the cran.
part of the major tubercle is the crestofthemajortubercle(26), and
distal to the caudal part lies the round surfacefortheinfraspinatus
(26')where the superficial part of the tendon terminates. The inter-
tubercular groove (28) is covered craniolaterally by the major
tubercle, so that it is not visible in lateral view. The intermediate
tubercleisinsignificant, unlikethatofthehorse. On the medial sur-
face of the bodyofthehumerus(31)is the raised tuberosityofthe
teresmajor(32').Laterally the hooked teresminortuberosity(27')
and the crest-like deltoid tuberosity (32) stand out. On the distal
end of the humerus, the articular surface is the humeral condyle
(35). The lateral epicondyle (38) and the medial epicondyle (39)
include areas for attachment of the collateral ligg. and caudal pro-
jections for the origins of flexor mm. The caudally located olecra-
nonfossa(40)and the cranial radialfossa(41)are like those of the Digital Bones of the Manus
horse.
c) The two BONES OF THE FOREARM (ANTEBRACHIUM)
remain complete, and, except for a proximal (62') and a distal (dorsal) (palmar)
(62") interosseous space, are joined by syndesmosis in youth and
by a synostosis in later life. The radius is flattened and relatively
short. The articular circumference of carnivores is reduced to two
Dorsal and palmar
small caudal articular facets (44) in ungulates. The slightly elevat-
longitudinal grooves
ed radial tuberosity (46) lies farther distally than in the dog and
horse. On the distal end the radius bears the radial trochlea (48), Distal metacarpal
with tendon grooves on the cranial surface, and the medialstyloid canal
process(50)medially. The proximal end of the ulna, the olecranon
tuber (52), is a crest with two tubercles, projecting above the
radius. The distal end, the pointed lateral styloid process (61),
extends distally beyond the radius, with which it is fused, and artic-
ulates with the ulnar carpal bone.
'
d) The proximal row of CARPAL BONES consists of the radial
(63),intermediate(63'),ulnar(64), and the thick, bulbous accesso-
ry(65),carpalbones.Of the bones of the distal row, CIis always
Abaxial and axial
missing, CIIand CIII(66)are fused, and CIV(66)is a relatively palmar emi-
larger, separate bone. nences
e) Of the METACARPALBONES,McIand McIIare absent, and
McVis a much reduced, rod-like bone articulating with Mc IV. The
weight-bearing main metacarpal bones (McIIIandMc IV)are not
completely fused, as shown by the dorsal and palmar longitudinal
grooves with the perforating proximal and distal metacarpal
canals, and by the intercapitalnotch(69')between the two separate
distal heads(capita,69). Internally there is an incomplete bony sep-
tum between the marrow cavities. On the proximal base (67) the
flat articular surface is partially divided by a palmar notch into a
larger medial part and a smaller lateral part.
f) The PHALANGES form two main digits (III and IV) and two
dewclaws(paradigitiIIandV). The sides of the digits are designat-
ed axial and abaxial with reference to the long axis of the limb, and
the joints are called, for the sake of brevity, the fetlock, pastern, and
coffinjoints,as in the horse. Only on digits III and IV are three pha-
langes present: the proximal(70), middle(71), and distal(76)pha-
langes.They are somewhat prismatic, being flattened on the inter- '
digital surface. The prominent abaxial palmar eminence (see text
figure) of the prox. phalanx is a landmark for the fetlock joint. The ''
dorsalborderofthedistalphalanxextendsfromtheextensorproc.
(78) to the apex. The dewclaws, which do not reach the ground, '''
except on soft footing, lack the proximal phalanx, and sometimes
also the middle phalanx, and are attached to the main digits by fas-
cial ligaments only.
2
Anatomie des Rindes englisch 09.09.2003 12:16 Uhr Seite 3
Bones of the Thoracic Limb
Scapula
Costal surface (1)
Serrated surface (2)
Subscapular fossa (3)
Lateral surface (4)
Scapular spine (5)
Tuber of scap. spine (5') + -
Supraspinous fossa (6)
Infraspinous fossa (7)
Acromion (8)
Caudal border (10)
Cranial border (11)
Scapular notch (12)
Dorsal border (13)
Scapular cartilage (14)
Caudal angle (15)
Cranial angle (16)
Ventral angle (17)
Glenoid cavity (18)
Neck of scapula (19)
Supraglenoid tubercle (21) + -
Coracoid process (22) 5'
Humerus
Head of humerus (23)
Neck of humerus (24)
Major tubercle (25)
Cranial part (25')
Caudal part (25")
Crest of major tubercle (26) + -
Infraspinatus surface (26')
Triceps line (27)
Teres minor tuberosity (27')
Intertubercular groove (28)
Minor tubercle (29)
Cranial part (29')
Caudal part (29")
Body of humerus (31)
29'' Deltoid tuberosity (32)
25''
Teres major tuberosity (32')
25'
Crest of humerus (33)
29' Brachialis groove (34)
Condyle of humerus (35)
Lateral epicondyle (38) 27'
Lateral supracondylar crest (38') 29' 26'
32' Medial epicondyle (39)
Olecranon fossa (40)
Radial fossa (41)
Radius
Head of radius (43) 38'
Articular facets (44)
Neck of radius (45)
Radial tuberosity (46)
Body of radius (47)
Trochlea of radius (48)
Medial styloid process (50)
Ulna
Olecranon (51)
Olecranon tuber (52)
Anconeal process (53)
Trochlear notch (54)
Medial coronoid process (55)
62' Lateral coronoid process (56) 62'
Radial notch (57)
Body of ulna (58)
Head of ulna (59)
Lateral styloid process (61)
Prox. interosseous space (62')
Dist. interosseous space (62")
Carpal bones
Radial carpal bone (63)
Intermediate carpal bone (63')
Ulnar carpal bone (64)
Accessory carpal bone (65)
Carpal bones II and III fused (66)
62'' Carpal bone IV (66)
Metacarpal bones III and IV, V
Base (67)
Tuberosity of Mc III (67')
Body (68)
Heads (capita, 69)
63' Intercapital notch (69')
Digital bones
Proximal phalanx (70)
Middle phalanx (71)
Base (72)
Body (73)
Head (74)
Flexor tuberosity (75)
Distal phalanx (coffin bone 76)
Abaxial foramen (76')
Axial foramen (76")
Parietal groove (76"')
Articular surface (77)
Extensor process (78)
Flexor tubercle (79)
Proximal sesamoid bones (83) 69'
Distal sesamoid (navicular) bone (84)
(See also p. 2 text figure)
69'
3
Anatomie des Rindes englisch 09.09.2003 12:27 Uhr Seite 4
2. MUSCLES AND NERVES OF THE SHOULDER, ARM, AND FOREARM
The thoracic limb is skinned down to the hoofs as carefully as possible to preserve the cutaneous nn. and superficial vessels. At the
carpus the precarpal subcutaneous bursa should be examined. The skin is carefully cut around the dewclaws to leave them on the limb.
In the following nerve and muscle dissection, the pectoral mm. are removed with attention to the cranial and caudal pectoral nn. The
blood vessels are spared for their subsequent demonstration. The scapular part of the deltoideus is removed, except for a small stump
on the scapula, sparing the cutaneous branch of the axillary n. The tensor fasciae antebrachii is transected at its attachment to the fas-
cia, and the lateral head of the triceps is transected over the superficial branch of the radial n. and reflected distally.
a) The NERVES AND MUSCLES OF THE SHOULDER AND neous n., as in the horse. Themediann. isalsoboundbyconnective
ARM.The nerves are supplied by the brachial plexus. The rootsof tissue to the ulnar n. in the upper arm, and runs at first undivided
theplexus(5)come from the ventral branches of C6–T2. Thenum- craniomedially to the level of the elbow joint. The musculocuta-
berofnervesthatarisefromtheplexusisthesameinallspeciesof neousn.(9), from C6–C8; mixed, gives off the proximalmuscular
domesticmammals. br.(b), which passes between the parts of the coracobrachialis(16),
innervating them and the biceps brachii (26). The nerve separates
The suprascapular n. (8), from C6–C7; motor, passes laterally from the median n. in the middle of the arm, and gives off the distal
between the cranial border of the subscapularis and the supraspina- muscularbr.(d), which passes deep to the biceps and innervates the
tus (1) and innervates the latter as well as the strongly tendinous brachialis(21). The musculocutaneous n. is continued as the medial
infraspinatus (11). The 1–4 subscapular nn. (4), from C7–C8; cutaneousantebrachialn.(31), which becomes subcutaneous over
motor, are the main nerves of the tripartitesubscapularis(4). Small the lacertus fibrosus (thin, unlike that of the horse), and runs distal-
caudal parts of it are innervated by the axillaryn.(13), from C7–C8; ly medial to the cephalic v. The radialn.(15), from C7–T1; mixed,
mixed. This nerve passes laterally across the cranial border of the passes laterally between the medial(19)and long(18)headsofthe
tendon of the teresmajor(2), which it innervates, to the three parts tricepsbrachiiand gives off branches to them, as well as to the lat-
of the deltoideus: scapular(6),acromial(7), and clavicular(23)[clei- eral head (17), tensor fasciae antebrachii (22), and anconeus (25).
dobrachialis]. The axillary n. also innervates the teres minor (12), The anconeus is difficult to separate from the lateral head of the tri-
emerges through the scapular part of the deltoideus, runs distally on ceps, and an accessory head is incompletely separable from the
the extensor carpi radialis as the cranialcutaneousantebrachialn. medialhead. The radial n. follows the spiral course of the brachialis
(30), and ends in the proximal half of the forearm. The thoracodor- around the humerus from caudal to lateral, and occasionallyitsup-
saln.(3), from C7–C8; motor, ends in the latissimusdorsi(3), the pliesthedistalpartofthebrachialis, as in the horse. While still under
distal stump of which has been retained. The mediann.(14)C8–T2, the lateral head of the triceps, the nerve divides into deep (20) and
forms the axillary loop under the axillary a. with the musculocuta- superficial (32) branches.
At the carpal joint the tendon sheaths of the digital extensors, ext. carpi obliquus, and flexor carpi radialis should be examined. The
med. and lat. cutaneous antebrachial nerves must be preserved. To demonstrate the nerves and vessels, the pronator teres is transect-
ed. The flexor carpi ulnaris and -radialis are transected in the middle of the forearm.
b) NERVESANDMUSCLESONTHECRANIOLATERALSUR- The tendon of the extensor carpi obliquus (39) [abductor pollicis
FACE OF THE FOREARM. The muscles are innervated by the longus], enclosed in a synovial sheath, runs across the tendon of the
deepbranch(20)of the radial n. Its superficialbranch(32)becomes extensor carpi radialis and ends on Mc III. Thesupinatorisabsent.
the occasionally double lateral cutaneous antebrachial n. (33),
c) NERVES AND MUSCLES OF THE CAUDOMEDIAL SUR-
which runs distally on the extensor carpi radialis, lateral to the
FACE OF THE FOREARM. The muscles are innervated by the
cephalic v., with the medial cutaneous antebrachial n. on the medi-
ulnar n. and mediann.(14)from C8–T2; mixed. The latter cours-
al side of the vein, and gives off several branches to the lateral side
es, accompanied by the brachial a. and v., deep to the pronatorteres
of the forearm and carpus. On the metacarpus it divides into dor-
(27)and flexorcarpiradialis(28), giving off muscular branches to
sal common digital nn. II and III.
them and to the humeral and radial heads of the deep digital flex-
The origins of the digital and carpal extensors are predominantly or (34). The pronator quadratus is absent. The nerve continues in
on the lateral epicondyle of the humerus. the forearm, accompanied by the median a. and v. It supplies the
skin on the medial surface of the carpus and the proximal third of
The commondigitalextensor(40)has two bellies and two tendons,
the metacarpus, and, without division, unlike that of the horse,
which cross the carpus in the same synovial sheath. The larger, more
passes through the carpal canal on the medial border of the deep
cranial one is the medial digital extensor (proper extensor of digit
tendon of the supf. dig. flexor. In the metacarpus it divides into
III). Its flat tendon ends mainly on the extensorprocessanddorsal
palmar common digital nn. II and III and the communicating br. to
surface of the middle phalanx, but a thin abaxial branch descends
the supf. palmar br. of the ulnar n. Palmar common dig. n. III
vertically to a termination below the articular margin of the distal
divides into axial palmar dig. nn. III and IV. The ulnarn.(10), from
phalanx. At the fetlock joint an axial band of the tendon goes to the
C8–T2; mixed, while still in the upper arm, gives off the double
proximal end of the proximalphalanxoftheothermaindigit. Deep
caudalcutaneousantebrachialn.(24)to the caudomedial and cau-
to this band and the tendon, a fibrous dorsal sesamoid body is
dolateral surfaces of the forearm and carpus. The ulnar n., accom-
embeddedinthejointcapsule.* Above the pastern joint the tendon
panied by the collateral ulnar a. and v., passes to the caudal surface
is joined by axialandabaxial(l)extensorbranchesof interosseus III.
of the elbow joint. It gives branches to the flexorcarpiulnaris(29)
The small caudal belly of the common digital extensor is the com-
and supf.digitalflexor(36, 37), as well as to the ulnarand humer-
monextensorofdigitsIIIandIV. Its tendon bifurcates above the fet-
al heads of the deep dig. flexor (34). Between the flexor carpi
lock joint, and each branch, provided with a synovial sheath, ends
ulnaris and ulnaris lateralis it divides into the dorsal branch (43),
on the extensor process of the respective distal phalanx.
which in the metacarpus becomes dorsal common dig. n. IV, and
The tendon of the lateral digital extensor (41, proper extensor of the palmarbranch(42), which passes through the carpal canal and
digit IV) receives the extensor branches of interosseus IV (l) and runs lateral to the tendons of the supf. dig. flexor. It divides into a
ends in the same way as the medial digital extensor. Each proper deepbranchfor the interossei, and a superficialbranch, which runs
extensor has a synovial bursa at the fetlock joint. distally in the lateral groove between the deep flexor tendon and
interosseus IV to form, with the communicating br. of the median
The tendon of the large extensor carpi radialis (35) is almost sur-
n., palmar common digital n. IV.
rounded by a synovial bursa on the carpus, and terminates on the
tuberosity of Mc III. The supf. dig. flexor is composed of two parts. The tendon of the
supf. part passes between the two layers of the flexor retinaculum
The ulnaris lateralis (38) [extensor carpi ulnaris] is on the latero-
(k). The tendon of the deep part passes through the carpal canal
caudal surface of the forearm. It terminates with a phylogenetical-
with the tendon of the deep flexor. The two tendons of the supf.
ly older accessory tendon on the rudimentary Mc V, and with a
flexorjoininthedistalpartofthemetacarpus.
newermaintendonontheaccessorycarpalbone, makingthemus-
4 cleaflexorofthecarpus.
* Habermehl, 1961